Wire pulling tool

ABSTRACT

A tool for facilitating the pulling of strands between spaced supports to which the strands are to be attached which consists generally of a handle with a grooved pulley mounted thereon and a rotatable key mounted on the handle adjacent the pulley which may be turned from an open position to permit placing a loop of the strand over the pulley to a closed position to prevent the strand loop from leaving the pulley when not in taut condition and the method of pulling strands using said tool which includes the steps of fastening the ends of strands being fed from storage rolls to one support adjacent the storage rolls, looping said strands over the pulley, pulling the tool with the strands looped over the pulley to a second support and finally fastening the strands thus pulled to the spaced supports.

United States Patent 3,191,910 6/1905 Eitel H ABSTRACT: A tool forfacilitating the pulling of strands between spaced supports to which thestrands are to be attached which consists generally of a handle with agrooved pulley mounted thereon and a rotatable key mounted on the handleadjacent the pulley which may be turned from an open position to permitplacing a loop of the strand over the pulley to a closed position toprevent the strand loop from leaving the pulley when not in tautcondition and the method of pulling strands using said tool whichincludes the steps of fastening the ends of strands being fed fromstorage rolls to one support adjacent the storage rolls, looping saidstrands over the pulley. pulling the tool with the strands looped overthe pulley to a second support and finally fastening the strands thuspulled to the spaced supports.

WIRE PULLING TOOL This invention relates to a tool for pulling strandsand to a method of pulling strands using such tool.

There are certain installations in which strands are stretched betweenand fastened to spaced supports in taut condition. One such installationof common knowledge is in wire fences in which wires are stretchedbetween fence posts and fastened thereto. Another is in telephone wiringinstallations such as may occur in telephone exchanges or in undergroundvaults where various connections are made between the wires of telephonecables. In the case of the latter, it is common practice to provide aframe having spaced end pieces with wires stretched in parallel fashionacross the frame and fastened to the end pieces.

The tool of my invention facilitates the placement of wires ininstallations such as given above by way of example, but it obviouslymay be used in any installation where a number of wires or strands mustbe placed between fixed spaced supports.

It is one object of my invention to provide a simple yet practical toolfor extending and placing strands such as wires between spaced supports.

it is another object to provide such a tool which may accommodate anumber of strands at a time.

It is still another object to provide a novel method of extending andplacing strands using the novel tool.

These and other objects and advantages will become more apparent as thisdescription proceeds and reference is had to the accompanying drawingforming a part of this specification and in which:

FIG. 1 is a perspective view of my novel strand stretching tool;

FIG. 2 is a sectional view on the line 2-2 of FIG. 1 of the pulley endof the tool with the pulley removed from the handle; and

FIG. 3 is a view of a frame such as used in telephone wiringinstallations showing the use of the tool in extending or stretchingwires to be fastened to said frame.

Referring now to the drawing in detail, the tool comprises a pulleyprovided with a peripheral groove 11 rotatably mounted on a handlemember 12 by means of a bolt 13 and nut 14. The free end of the handle12 is preferably provided with a transverse hand grip 15 to facilitatepulling.

On the handle 12 adjacent the pulley a rotatable key 16 is mounted,which key in one position will afford access to the groove in the pulleyso that a strand loop may be placed over the pulley and in the grooveand in another position will substantially cover the groove to preventthe loop from slipping out.

The key 16 is rotatably mounted on the handle 12 by means of the boltand nut 18 and in order to minimize the number of projections on thetool which might inadvertently snag or catch on the strands as the loopsare placed on the pulley and the tool advanced, it is preferable tocountersink both the nut 18 and the nut 14 mounting the pulley on thehandle, as shown.

FIG. 3 shows the method employed in using the tool. In this instance thestrands are wires which are to be attached in parallel relation on aframe such as is used in telephone wiring assemblies.

The frame 22 is rectangular and has parallel end pieces 23. 23 betweenwhich parallel wires are to be stretched and fastened at points 24 onthe end pieces.

To place the wires by means of the tool a number of rolls or spools 26,26' of wires are first positioned adjacent one end piece 23' of theframe and are mounted so that they may freely feed off wire when theends of the wires are pulled. The ends of the wires from as many spoolsas desired are then fastened at points 24 on the end piece 23 of theframe. Loops are then formed in the wires between the spools and theirfastenings 24 on the end piece and said loops are placed over the pulley10 of the tool and the key 16 turned to a position to prevent the loopsfrom slipping out of the groove in the pulley.

The tool is then advanced alon the frame to the op osite end piece 23where the wires are t en cut and fastene at points 24 thereon and thewires cut at the spools and the ends from the loop fastened at 24 onfirst end piece 23. It can readily be seen that for each spool or rollof wire one advance of the tool across the frame results in two wiresbeing stretched simultaneously. Obviously a number greater than two maybe placed by a single passage of the tool across the frame by providinga greater number of rolls or spools so long as the loops over the pulleyare placed in the same direction.

Having described my invention what I desire to secure by Letters Patentis:

l. The method of pulling strands and fixing them to spaced supportstherefor which includes the following steps:

a. rotatably mounting at least one supply roll of the strand materialadjacent one of the spaced supports whereby the strand may be fed fromthe roll by pulling the end thereof;

b. fastening the end of said strand to said one support;

c. forming a loop in said strand between the point of attachment of saidstrand to said one support and the supply roll;

d. placing said loop over a pulley rotatably mounted on a pulling tool;

e. advancing said pulling tool from adjacent said one support toward theother of said spaced supports and thereby feeding said strand from saidsupply roll and advancing said loop in the strand to a point slightlybeyond said other support;

f. fastening the strand on both sides of the loop to said other support;and finally g. fastening said strand fed from said supply roll to saidfirst support.

2. A portable tool for pulling strands comprising:

a. a handle member;

b. a grooved pulley member rotatably mounted on the handle adjacent oneend thereof;

c. a handle grip at the end of the handle opposite the end mounting thepulley perpendicular to the axis thereof; and

d. a rotatable key mounted on the handle having its axis parallel withthe axis of the pulley which in one position of rotation extends overand in proximity of the pulley groove to prevent lateral entry andremoval of a strand to the groove and in a second position is removedfrom proximity of the groove to permit such entry and removal of thesaid strand.

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1. The method of pulling strands and fixing them to spaced supportstherefor which includes the following steps: a. rotatably mounting atleast one supply roll of the strand material adjacent one of the spacedsupports whereby the strand may be fed from the roll by pulling the endthereof; b. fastening the end of said strand to said one support; c.forming a loop in said strand between the point of attachment of saidstrand to said one support and the supply roll; d. placing said loopover a pulley rotatably mounted on a pulling tool; e. advancing saidpulling tool from adjacent said one support toward the other of saidspaced supports and thereby feeding said strand from said supply rolland advancing said loop in the strand to a point slightly beyond saidother support; f. fastening the strand on both sides of the loop to saidother support; and finally g. fastening said strand fed from said supplyroll to said first support.
 2. A portable tool for pulling strandscomprising: a. a handle member; b. a grooved pulley member rotatablymounted on the handle adjacent one end thereof; c. a handle grip at theend of the handle opposite the end mounting the pulley perpendicular tothe axis thereof; and d. a rotatable key mounted on the handle havingits axis parallel with the axis of the pulley which in one position ofrotation extends over and in proximity of the pulley groove to preventlateral entry and removal of a strand to the groove and in a secondposition is removed from proximity of the groove to permit such entryand removal of the said strand.